@book{xie2015,
  title     = {Dynamic Documents with {R} and knitr},
  author    = {Yihui Xie},
  publisher = {Chapman and Hall/CRC},
  address   = {Boca Raton, Florida},
  year      = {2015},
  edition   = {2nd},
  note      = {ISBN 978-1498716963},
  url       = {http://yihui.name/knitr/}
}
@book{舒华2015,
  title     = {心理与教育研究中的多因素实验设计},
  author    = {舒华},
  year      = {2015},
  address   = {北京},
  publisher = {北京师范大学出版社}
}
@book{杜晓新2013,
  title     = {心理与教育研究中实验设计与SPSS数据处理},
  author    = {杜晓新},
  year      = {2013},
  address   = {北京},
  publisher = {北京大学出版社}
}
